【作者】 陈元瑞； 林子宽； 孟静； 曹勇； 陈旭； 徐滔；

【Author】 CHEN Yuan-rui;LIN Zi-kuan;MENG Jing;CAO Yong;CHEN Xu;XU Tao;College of Oceanic and Atmospheric Science/National Oceanography Experimental Teaching Demonstration Center,Ocean University of China;

【机构】 中国海洋大学海洋与大气学院/国家级海洋学实验教学示范中心；

【摘要】 圆柱绕流是流体力学中的经典问题,有着显著的现实意义。目前针对单圆柱以及双圆柱绕流的研究成果已经十分丰富,但对于多圆柱绕流的流场特征研究仍然存在一定局限。本研究在低速循环水槽内进行圆柱绕流实验。应用粒子成像速度仪(PIV)技术对多圆柱绕流的流场信息进行采集,探究圆柱后面尾涡受到间距比和雷诺数的影响。在此基础上,将实验结果与单圆柱和双圆柱的研究成果进行对比,对多圆柱绕流所存在的特点进行了总结。更多还原

【Abstract】 Fluid flow around a circular cylinder is a classical problem in fluid mechanics,which has significant practical significance.At present,the research results of single cylinder and two cylinders flow have been very rich,but there are still some limitations in the research of flow field characteristics of multi-cylinder flow.In this paper,the flow around four side-by-side arrangement cylinders in a low-speed circulating water tank is studied.Particle image velocimeter(PIV) technology was used to collect the flow pattern,and the influence of spacing ratio and Reynolds number on the wake behind the cylinder was explored.On this basis,the experimental results are compared with the research results of single cylinder and two cylinders,and the characteristics of multi cylinder flow are summarized.更多还原